Filter
Subtypes
Separate or combine wavelengths
Subtypes
LP : Long Wave Pass Coating
HR for one single wavelength or a narrow band and HT for a longer wavelength or band, also available as Partial Reflector
Find an example here.
SP : Short Wave Pass Coating
HR for one single wavelength or a narrow band and HT for a shorter wavelength or band, also available as Partial Reflector
Find an example here.
NF : Notch Filter Coating
HR for one single wavelength or a narrow band and HT for a shorter and longer wavelength or band, also available as Partial Reflector
Find an example here.
MP : Multi Pass Coating
Combination of several HR and HT wavelength areas, also available as Partial Reflector
Find an example here.
BP : Band Pass Coating
Selecting a small wavelength area, sometimes also known as IF (Interference Filter), FWHM of some tens of nm down to < 1 nm, sputtered coating
Find an example here.
REF : Reflection Filter Coating
Scanning and selecting a small wavelength area by tilting 4 reflection filter plates simultaneously. No change in the final beam direction
Find an example here.